Case Kittilä mine

Case Kittilä mine

Renewed tailings safety monitoring through joint development

The Kittilä mine is Europe's largest goldmine. The mine is operated by Agnico Eagle Finland Oy, a subsidiary of the Canadian gold producer Agnico Eagle Mines Limited. FinMeas participates in risk management of mine dams by supplying automated monitoring solutions for reservoir areas that enable real-time monitoring of reservoir measurement data. In addition to monitoring, the reporting of measurement data has also been renewed with an automated reporting service provided by FinMeas.

A tremendous amount of data in a single service

"Before, we did many more of the measurements manually and also recorded the data manually in Excel spreadsheets. Now, thanks to FinMeas, we have managed to automate a great number of instruments at the tailings reservoirs, enabling real-time monitoring, alerts and automated reports for exceeding limit values," says Jussi Nousiainen, geotechnical engineer at Agnico Eagle. Nousiainen, who works in the EMT (Environment & Tailings Management) unit, is responsible for tasks related to the design of tailings and water reservoirs and related instruments, reporting and auditing at the Kittilä mine.

There is still both automatic and manual measurement equipment at the Kittilä mine. The data from the manual measurement equipment can also be entered into the measurement data service FinMeas Online. This way all data can be managed in one place and printed in one automated report, complete with charts.

Improved dam safety and saved work time are key benefits

A key benefit of automating measurement equipment is improving dam safety in the reservoir area. Real-time monitoring and alerts ensure a timely reaction to exceeding limit values.

"Before, we might conduct between two and four manual measurements of pore pressure at the construction area. Now, automated monitoring informs us of any changes immediately and we can take action according to appropriate protocols if the defined values are exceeded," says Nousiainen.

 

"The number of manual measurements in the field has decreased greatly and the time spent manually crunching numbers in Excel is down to a minimum now that all measurement data can be automatically composed into reports with charts included. That is a lot of working time saved that we can now use for other activities."

In addition to pore pressure measurements, measuring the surface level of underdrains between raised dams is important for intensifying pumping water from the wells according to need. Working time is saved both by reduced manual measurements as well as automated reporting of measurement data.

"The number of manual measurements in the field has decreased greatly and the time spent manually crunching numbers in Excel is down to a minimum now that all measurement data can be automatically composed into reports with charts included. That saves a lot of working time that we can now use for other activities," says Nousiainen.

Joint development of the best available system

The FinMeas Online system has been continuously developed according to the needs of Agnico Eagle Finland. Several new functionalities and visual formats have been introduced. Nousiainen applauds the FinMeas Online service:

"We work with many outside auditors. With FinMeas Online, it is also easy to present the way we monitor our reservoirs to them. The visual aspect of the system is a big plus. I feel we are developing a system that is the best, even globally speaking."

 "All promises are kept, and reaction times are very short"

FinMeas' short reaction times, reliability and active approach are all cornerstones of solid cooperation.

"I am satisfied with our cooperation. All promises are kept, and reaction times are very short. The FinMeas employees are also very active and self-organised. They keep us up to date about events, even if we are busy with other things," says Nousiainen.

The cooperation with Agnico Eagle Finland will continue in the future. For example, the surface level of the tailings and water reservoirs are still measured manually but a new automated solution is already under joint development. Automated reporting for the environmental side is also currently in the works.

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